Check out which companies are making headlines after the bell Monday:
Facebook - Bernstein downgraded the social-networking giant to "market perform" from "outperform," sending shares lower in extended-hours trading.
(Read More: Stocks Close Lower, Led by Energy; Banks Gain)
Lionsgate - The film production-distribution company posted earnings of 27 cents a share on revenue of $744 million, exceeding expectations for 17 cents a share on revenue of $720 million. Shares gained in extended-hours trading.
Annie's - The organic products manufacturer posted earnings of 15 cents a share, excluding one-time items, edging past expectations by a penny a share. Meanwhile, the company reported revenue of $36 million, falling slightly short of estimates for $37 million.
Rexnord - The diversified machinery company announced that its board has initiated a review of strategic alternatives to enhance shareholder value and has engaged Goldman Sachs to serve as its financial adviser, pushing shares sharply higher in extended-hours trading. Separately, the company posted earnings, current-quarter revenue and 2013 sales that missed expectations.
HCA - The health care facilities operator announced a 50 million share secondary for holders through Barclays and Citigroup. Shares dipped in extended-hours trading. Earlier Monday, Morgan Stanley initiated coverage of the company with an "overweight" rating an a $47 price target.
VMware - The software company announced it will acquire Virsto, a software provider that optimizes storage performance. While financial terms of the agreement were not disclosed, the acquisition is scheduled to close in the first quarter of this year.
NutriSystem - The weight loss products and services company announced CFO David Clark will leave the company in early March. The company's controller Kathleen Simone will serve as the company's interim CFO if a successor is not appointed before Clark's departure. Shares were lower in extended-hours trading.
Primerica - The financial services company boosted its quarterly dividend to 11 cents a share from 9 cents a share.